.app {
  padding-top: 0.8rem;
}
a {
  color: white;
}
.header {
  position: fixed;
  width: 100vw;
  height: 0.8rem;
  background: #ff4400;
  left: 0;
  top: 0;
}
.header div {
  font-size: 0.3rem;
}
.header .text {
  width: 100%;
  color: #fff;
  text-align: center;
  line-height: 0.8rem;
}
.header .back {
  position: absolute;
  left: 0.3rem;
  top: 0rem;
  color: #fff;
  line-height: 0.8rem;
}
.header .register {
  position: absolute;
  right: 0.3rem;
  top: 0rem;
  color: #fff;
  line-height: 0.8rem;
}
